Single cylinder piston pump



FIG. 1 is a front elevation view of the single cylinder piston pump of the present invention.

FIG. 2 is a rear elevation view of the pump.

FIGS. 3 and 4 are side elevation views from opposite sides of the pump.

FIG. 5 is a top plan view of the pump; and,

FIG. 6 is a bottom plan view of the pump.

It being understood that the broken lines are for exemplary illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a single cylinder piston pump, or similar article substantially as shown. 